Key Area 1 Flashcards
What is a metabolic pathway
Integrated and controlled pathways of enzyme catalysed reactions within a cell
What steps can metabolic pathways have
Reversible, irreversible and alternative routes
Reactions with in metabolic pathways can be…
Anabolic or catabolic
What’s an anabolic reaction
Builds large molecules from small building blocks - requires energy
What’s a catabolic reaction
Breaks down complex molecules - releases energy
3 things embedded with in membrane
Protein pumps
Protein pores
Enzymes
What does a protein pump do
Transfer specific ions across membrane
What do protein pores do
Allow larger molecules to move across membrane
What are metabolic pathways controlled by
Presence or absence of particular enzymes and the regulation of the rate of reaction of key enzymes
What is induced fit
When active site slightly changes to better fit substrate
Affinity of substrates
High
Affinity of product
Low
What is a inhibitor
A substance which decreases the rate of an enzyme controlled reaction
What is an inhibitor
A substance which decreased the rate of an enzyme controlled reaction
3 types of inhibitors
Competitive
Non competitive
Feedback
